Question: What degree is achieved by Nikolay Nekrasov in 1839?
Paraphrase: What did Nikolay Nekrasov graduate in in 1839?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q208003 p:P69 ?s . ?s ps:P69 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1839')) }